JP6084241B2 - Board transfer system for electronic component mounting equipment - Google Patents

Description

  The present invention relates to a board transfer system of an electronic component mounting apparatus for transferring a printed circuit board to an electronic component mounting apparatus, a printed circuit board solder printing apparatus, or the like.

Conventionally, as a substrate transport system for transporting a printed circuit board to an electronic component mounting device such as an electronic component mounting apparatus or a printed circuit board solder printing apparatus, there is one described in Patent Document 1, for example.
The substrate transport system disclosed in Patent Document 1 includes a substrate sorting device between a screen printing device and a coating / inspecting device located on the downstream side of the screen printing device.

This substrate sorting apparatus is for moving a printed board in a horizontal direction perpendicular to the transport direction.
The printed circuit board on which the solder is applied by the screen printing apparatus is sent from the screen printing machine to the substrate distribution apparatus. The printed circuit board is moved in the horizontal direction orthogonal to the transport direction by the substrate sorting apparatus, and then transported to the coating and inspection apparatus.

Japanese Patent No. 4883071

  In the board conveyance system of the electronic component mounting apparatus described in Patent Document 1, there is a problem that the printed board cannot be efficiently conveyed. This is because, for example, in a screen printing apparatus, the printed circuit board after printing may not be promptly carried out to the downstream board sorting apparatus.

  The substrate distribution device cannot carry in the next printed circuit board from the screen printing device unless the printed circuit board is applied and sent to the inspection device. For this reason, when the application / inspection device does not permit the loading of the printed circuit board, the printed circuit board is held in the substrate distribution device, and the printed circuit board stays in the screen printer as described above. Become.

  In other words, in the board transport system described in Patent Document 1, since the printed board may not be carried in and carried out simultaneously in the screen printing machine, the printed board carrying efficiency is lowered as described above. Such a problem caused by the retention of the printed circuit board occurs not only in the screen printing apparatus but also in other electronic component mounting apparatuses such as a coating / inspection apparatus and an electronic component mounting apparatus.

  The present invention has been made to solve such a problem, and can efficiently transport a printed circuit board in a substrate transport system in which the loading position and the unloading position of the printed circuit board are shifted in a direction perpendicular to the transport direction. The purpose is to.

In order to achieve this object, an electronic component mounting equipment board transport system according to the present invention includes a mounting equipment conveyor for transporting a printed circuit board in a first horizontal direction from one end to the other end of the electronic component mounting equipment. An upstream conveyor for unloading the printed circuit board from an upstream device located upstream of the electronic component mounting device in the transport direction of the printed circuit board; and a downstream side of the printed circuit board transport direction from the electronic component mounting device. A downstream conveyor for carrying the printed circuit board into a downstream apparatus located therein, and a buffer conveyor disposed so as to be positioned between at least the downstream conveyor and the mounting equipment conveyor among the upstream conveyor and the downstream conveyor The mounting equipment conveyor moves the printed circuit board in a second horizontal direction orthogonal to the transport direction. The upstream conveyor is spaced apart from the downstream conveyor in the second direction, the buffer conveyor is configured to convey the printed circuit board in the first direction, One of these conveyors having a function of moving the printed circuit board in the second direction, and the mounting equipment conveyor and the buffer conveyor are located at the same position in the second direction. from shift take a printed circuit board to the other conveyor, the mounting device conveyor, said in the buffer conveyor, the downstream buffer conveyor which is provided between the mounting device conveyor and the downstream conveyor is printed in the second direction A printed circuit board that can be unloaded, and that is in a standby state at the unloading position where the substrate is unloaded, and the next operation is performed. When the printed circuit board is in the mounting equipment conveyor, it is the next position where the next process of the unloading process in the second direction is performed, and the position where the work is performed on the next printed circuit board The downstream buffer conveyor is moved to the next position in the second direction in a state where the printed board is not carried and the printed board is not mounted. is there.

The electronic component mounting equipment board transport system according to the present invention includes a mounting equipment conveyor for transporting a printed circuit board in a first horizontal direction from one end of the electronic component mounting equipment to the other end, and the electronic component mounting equipment. An upstream conveyor that unloads the printed circuit board from an upstream device positioned upstream in the transport direction of the printed circuit board, and a downstream device that is positioned downstream in the transport direction of the printed circuit board from the electronic component mounting device. The mounting device comprising: a downstream conveyor for carrying the printed circuit board; and a buffer conveyor disposed so as to be positioned between at least the downstream conveyor and the mounting equipment conveyor among the upstream conveyor and the downstream conveyor. The equipment conveyor has a function of moving the printed circuit board in a second horizontal direction perpendicular to the transport direction, and The side conveyor is spaced from the downstream conveyor in the second direction, the buffer conveyor has a function of transporting the printed circuit board in the first direction, and the printed circuit board in the second direction. Printed circuit board having a function of moving in the direction from one conveyor to the other in a state where the mounting equipment conveyor and the buffer conveyor are located at the same position in the second direction. The mounting equipment conveyor has a printed circuit board that can be carried out, and a downstream buffer conveyor provided between the downstream conveyor and the mounting equipment conveyor is the second conveyor. When waiting at the unloading position for unloading the printed circuit board in the direction, it is intended to move to the unloading position in the second direction. The features.

  The present invention is the above invention, wherein the buffer conveyor includes a downstream buffer conveyor provided between the downstream conveyor and the mounting equipment conveyor, and the mounting equipment conveyor has a printed board that can be carried out. Is moved to the next position where the next step of the printed circuit board unloading step in the second direction is performed, and the downstream buffer conveyor is in a state where the printed circuit board is not placed. It moves to the said next position in a 2nd direction, It is characterized by the above-mentioned.

  The present invention is the above invention, wherein the buffer conveyor includes an upstream buffer conveyor provided between the upstream conveyor and the mounting equipment conveyor, and the upstream buffer conveyor includes the first mounting equipment conveyor. It moves to the said carrying-out position when it waits in the carrying-out position which carries out the printed circuit board in 2 directions, It is characterized by the above-mentioned.

  The present invention is the above invention, wherein the buffer conveyor includes an upstream buffer conveyor provided between the upstream conveyor and the mounting equipment conveyor, and the upstream buffer conveyor includes the first mounting equipment conveyor. It moves to the said work position when it waits in the work position where the operation | work by the said electronic component mounting apparatus in 2 direction is implemented, It is characterized by the above-mentioned.

  According to the present invention, it is possible to temporarily hold the printed circuit board carried into the mounting device conveyor from the upstream device and the printed circuit board carried out from the mounting device conveyor to the downstream device on the buffer conveyor. . For this reason, it can prevent using a buffer conveyor that conveyance of a printed circuit board is overdue. Therefore, according to the present invention, in the substrate transfer system in which the loading position and the unloading position of the printed board are shifted in the second direction, the printed board transfer efficiency is improved.

FIG. 1 is a plan view showing a configuration of a board transfer system for an electronic component mounting apparatus according to the present invention. FIG. 2 is a plan view showing a configuration of a board transfer system for an electronic component mounting apparatus according to the present invention. FIG. 3 is a block diagram showing the configuration of the control system. FIG. 4 is a flowchart for explaining the operation of the mounting equipment conveyor. FIG. 5 is a flowchart for explaining the operation of the downstream buffer conveyor. FIG. 6 is a flowchart for explaining the operation of the upstream buffer conveyor. FIG. 7 is a plan view for explaining the operation of the mounting machine conveyor and the downstream buffer conveyor. FIG. 8 is a plan view for explaining the operation of the mounting machine conveyor and the downstream buffer conveyor. FIG. 9 is a plan view for explaining the operation of the mounting machine conveyor and the upstream buffer conveyor. FIG. 10 is a plan view for explaining the operation of the mounting machine conveyor and the upstream buffer conveyor.

Hereinafter, an embodiment of a substrate transfer system for an electronic component mounting apparatus according to the present invention will be described in detail with reference to FIGS.
A board transfer system 1 shown in FIG. 1 sends a printed board 2 from an upstream device 3 to an electronic component mounting device 4, and after the work is completed in the electronic component mounting device 4, the electronic component mounting device 4 transfers to the downstream device 5. It is for sending. The printed circuit board 2 is transported by the substrate transport system 1 in the first horizontal direction from the upstream device 3 toward the downstream device 5. In the following, this first direction is simply referred to as the X direction.

  The upstream device 3 is a device for performing a pre-process of a process performed by the electronic component mounting apparatus 4 described later. The upstream device 3 is located upstream of the electronic component mounting device 4 in the transport direction of the printed circuit board 2. The upstream device 3 includes an upstream conveyor 6 for carrying out the printed circuit board 2.

  The downstream apparatus 5 is an apparatus for performing a post-process performed by the electronic component mounting apparatus 4. The downstream device 5 is located downstream of the electronic component mounting device 4 in the transport direction of the printed circuit board 2. The downstream device 5 includes a downstream conveyor 7 for carrying the printed circuit board 2 therein. The upstream conveyor 6 is spaced apart from the downstream conveyor 7 by a predetermined distance in a second horizontal direction perpendicular to the X direction. Hereinafter, this second direction is simply referred to as the Y direction.

  The electronic component mounting device 4 is a device that performs some work using the printed circuit board 2. Although not shown, the electronic component mounting device 4 includes, for example, a screen printing apparatus that applies a solder paste to the printed board 2 and an electronic component mounting apparatus that mounts the electronic component on the printed board 2. The electronic component mounting device 4 includes a mounting device conveyor 8 that conveys the printed circuit board 2 from one end to the other end of the electronic component mounting device 4 in the X direction.

The mounting equipment conveyor 8 has a function of moving the printed circuit board 2 in the Y direction. The mounting equipment conveyor 8 is movable between the same position as the upstream conveyor 6 and the same position as the downstream conveyor 7 in the Y direction.
The electronic component mounting device 4 operates the printed circuit board 2 in a state where the mounting device conveyor 8 is stopped between one end and the other end in the Y direction. This work is mounting of an electronic component when the electronic component mounting apparatus 4 is an electronic component mounting apparatus, for example.

  An upstream buffer conveyor 11 is provided between the upstream conveyor 6 and the mounting equipment conveyor 8. A downstream buffer conveyor 12 is provided between the downstream conveyor 7 and the mounting equipment conveyor 8. In this embodiment, the upstream buffer conveyor 11 and the downstream buffer conveyor 12 constitute a “buffer conveyor” in the present invention.

The upstream buffer conveyor 11 and the downstream buffer conveyor 12 have a function of transporting the printed circuit board 2 in the X direction and a function of moving the printed circuit board 2 in the Y direction.
The upstream buffer conveyor 11 and the downstream buffer conveyor 12 are movable between the same position as the upstream conveyor 6 and the same position as the downstream conveyor 7 in the Y direction.

In a state where the upstream buffer conveyor 11 is located at the same position as the upstream conveyor 6 in the Y direction, the printed circuit board 2 is transferred from the upstream conveyor 6 to the upstream buffer conveyor 11 as shown in FIG. be able to.
In the state where the upstream buffer conveyor 11 is located at the same position as the mounting equipment conveyor 8 in the Y direction, the printed circuit board 2 is transferred from the upstream buffer conveyor 11 to the mounting equipment conveyor 8 as shown in FIG. be able to.

In a state where the downstream buffer conveyor 12 is located at the same position as the mounting equipment conveyor 8 in the Y direction, the printed circuit board 2 is transferred from the mounting equipment conveyor 8 to the downstream buffer conveyor 12 as shown in FIG. be able to.
In the state where the downstream buffer conveyor 12 is located at the same position as the downstream conveyor 7 in the Y direction, the printed circuit board 2 is transferred from the downstream buffer conveyor 12 to the downstream conveyor 7 as shown in FIG. be able to.
The operations of the mounting equipment conveyor 8, the upstream buffer conveyor 11, and the downstream buffer conveyor 12 are controlled by a control device 13 (see FIG. 3) of the electronic component mounting equipment 4.

  As shown in FIG. 1, these conveyors can transport a plurality of printed circuit boards 2 by operating in conjunction with each other. FIG. 1 shows a state where loading and unloading of the printed circuit board 2 are performed simultaneously on the mounting device conveyor 8. The printed board 2 is carried into the mounting equipment conveyor 8 by sending the printed board 2 sent from the upstream conveyor 6 to the upstream buffer conveyor 11 from the upstream buffer conveyor 11 to the mounting equipment conveyor 8.

  The printed board 2 is unloaded from the mounting equipment conveyor 8 by sending the printed board 2 from the mounting equipment conveyor 8 to the downstream buffer conveyor 12. The “carry-in position” shown in FIG. 1 is the same position as the upstream conveyor 6 in the Y direction. The “carry-out position” shown in FIG. 1 is the same position as the downstream conveyor 7 in the Y direction.

  As shown in FIG. 2, the printed circuit board 2 carried into the mounting device conveyor 8 is sent to the center of the conveying direction (X direction) of the mounting device conveyor 8, and the electronic component mounting device 4 performs mounting of electronic components and the like. Work is carried out. As shown in FIG. 2, the printed circuit board 2 sent from the mounting equipment conveyor 8 to the downstream buffer conveyor 12 is in the state where the downstream buffer conveyor 12 is moved to the same position as the downstream conveyor 7 in the Y direction. It is sent from the buffer conveyor 12 to the downstream conveyor 7.

Next, operation | movement of the mounting apparatus conveyor 8, the upstream buffer conveyor 11, and the downstream buffer conveyor 12 is demonstrated using the flowchart shown to FIGS. 4-6, and the schematic diagram shown to FIGS.
When the mounting device conveyor 8 carries out the printed circuit board 2, first, as shown in steps S <b> 1 to S <b> 2 of the flowchart shown in FIG. 4, first, it is determined whether the downstream buffer conveyor 12 is waiting for the printed circuit board 2 to be carried out. The control device 13 determines. If the printed circuit board 2 does not remain on the downstream conveyor 7, the determination is “NO” and the process proceeds to step S3. In step S <b> 3, the mounting equipment conveyor 8 waits until the downstream buffer conveyor 12 moves to the downstream side of the mounting equipment conveyor 8, and then sends the printed circuit board 2 to the downstream buffer conveyor 12.

  If “YES” is determined in the step S <b> 2, the control device 13 determines whether or not the next printed board 2 is sent into the mounting equipment conveyor 8 in a step S <b> 4. At this time, as shown in the upper half of FIG. 7, if there is no next printed circuit board at the standby position 8a in the mounting equipment conveyor 8, "NO" is determined in the step S4, and the process proceeds to the step S5. move on. In step S5, as shown in the lower half of FIG. 7, the mounting equipment conveyor 8 moves to the same position as the downstream buffer conveyor 12 in the Y direction.

  On the other hand, if “YES” is determined in the step S4, that is, as shown in the upper half of FIG. 8, the printed circuit board 2a after the work is finished in the mounting equipment conveyor 8 and the print to be performed next. If there is a substrate 2b, the process proceeds to step S6. In step S6, as shown in the lower half of FIG. 8, the mounting equipment conveyor 8 moves to the next position in the Y direction. This “next position” is a position at which the next process of the printed board unloading process is performed in the Y direction.

Examples of the “next position” when the electronic component mounting apparatus 4 is an electronic component mounting apparatus include a position where the printed circuit board 2 is recognized by a camera (not shown). The “next position” is different for each electronic component mounting device 4.
After the mounting equipment conveyor 8 has moved to the “next position” in this way, the downstream buffer conveyor 12 that has finished carrying out the printed board 2 moves to the same position as the mounting equipment conveyor 8 in the Y direction, and the printed board 2a Is sent from the mounting equipment conveyor 8 to the downstream buffer conveyor 12.

  The downstream buffer conveyor 12 operates as shown in the flowchart of FIG. The downstream buffer conveyor 12 to which the printed circuit board 2 is sent from the mounting equipment conveyor 8 moves to a position adjacent to the downstream conveyor 7 and starts to carry out the printed circuit board 2 as shown in step S10 in the flowchart of FIG. It will wait.

Then, as shown in steps S11 to S12, the downstream buffer conveyor 12 is configured to carry out the printed circuit board 2 under the control of the control device 13 after the substrate carry-out permission signal is input from the downstream device 5 to the control device 13. To start.
After this carry-out operation is completed, in step S14, the control device 13 confirms the position of the mounting device conveyor 8, and in step S15, the control device 13 places the downstream buffer conveyor 12 in the same direction as the mounting device conveyor 8 in the Y direction. Move to.

That is, the downstream buffer conveyor 12 unloads the printed circuit board 2 as shown in the upper half of FIG. 8, and then, at the position adjacent to the mounting equipment conveyor 8 in the Y direction, as shown in the lower half of FIG. Moving. At this time, when the mounting apparatus conveyor 8 is located at the carry-in position as shown in FIG. 1, the downstream buffer conveyor 12 moves to the carry-in position.
The downstream buffer conveyor 12 is sent from the mounting equipment conveyor 8 after moving to the same position (position adjacent to the mounting equipment conveyor 8) as the mounting equipment conveyor 8 in the Y direction, as shown in steps S16 to S17. It waits in the state which can carry in the printed circuit board 2. FIG.

  The upstream buffer conveyor 11 operates as shown in the flowchart of FIG. The upstream buffer conveyor 11 to which the printed circuit board 2 is sent from the upstream conveyor 6 starts an operation of unloading the printed circuit board 2 in step S100 of the flowchart shown in FIG. Next, in step S <b> 101, the control device 13 confirms the position of the mounting equipment conveyor 8 and determines whether or not the mounting equipment conveyor 8 is in a state where the printed circuit board 2 can be loaded.

  The “state in which the printed circuit board 2 can be carried in” refers to a state in which the printed circuit board 2 is not present at the standby position 8a of the mounting equipment conveyor 8 and a state in which the mounting equipment conveyor 8 has not moved in the Y direction (unloading and work). Is in a stopped state). The upper half of FIG. 9 shows a state in which the mounting equipment conveyor 8 moves to the carry-out position and carries the printed circuit board 2 to the downstream side. The upper half of FIG. 10 shows a state in which the printed circuit board 2 is sent to the downstream side after the mounting equipment conveyor 8 has moved to the work position and the work has been completed.

  When the mounting device conveyor 8 is ready to carry the printed circuit board 2 in this way, the control device 13 moves the upstream buffer conveyor 11 to the same position as the mounting device conveyor 8 in the Y direction in step S103. At this time, as shown in FIG. 1, when the mounting apparatus conveyor 8 has already moved to the adjacent position, the upstream buffer conveyor 11 stops at that position without moving. Further, when the mounting device conveyor 8 is in the carry-out position as shown in the upper half of FIG. 9, the upstream buffer conveyor 11 moves to the carry-out position as shown in the lower half of FIG.

Furthermore, when the mounting equipment conveyor 8 is in the working position as shown in the upper half of FIG. 10, the upstream buffer conveyor 11 moves to the working position as shown in the lower half of FIG.
The upstream buffer conveyor 11 moves to the same position as the mounting equipment conveyor 8 in the Y direction, and then starts an operation of unloading the printed circuit board 2 in step S104.

According to the board conveying system 1 of the electronic component mounting apparatus 4 configured as described above, the printed board 2 carried into the mounting apparatus conveyor 8 from the upstream apparatus 3 or the downstream apparatus from the mounting apparatus conveyor 8. 5 can be temporarily held on the buffer conveyor (upstream buffer conveyor 11 or downstream buffer conveyor 12). For this reason, it is possible to prevent the transport of the printed circuit board 2 from being delayed by using the buffer conveyor.
Therefore, according to this embodiment, it is possible to improve the conveyance efficiency of the printed board 2 in the board conveyance system 1 in which the carry-in position and the carry-out position of the printed board 2 are shifted in the Y direction.

The buffer conveyor according to this embodiment includes a downstream buffer conveyor 12 provided between the downstream conveyor 7 and the mounting equipment conveyor 8. When the mounting equipment conveyor 8 has the printed board 2 that can be carried out and the downstream buffer conveyor 12 is waiting at the carry-out position for carrying out the printed board 2 in the Y direction. , Move to the unloading position in the Y direction.
For this reason, the operation | movement which sends the printed circuit board 2 from the downstream buffer conveyor 12 to the downstream conveyor 7 and the operation | movement which sends the printed circuit board 2 from the mounting apparatus conveyor 8 to the downstream buffer conveyor 12 can be performed simultaneously. Therefore, according to this embodiment, it is possible to provide the board conveyance system 1 of the electronic component mounting apparatus 4 that can shorten the time required for carrying out the printed board 2.

The mounting device conveyor 8 according to this embodiment moves to the next position where the next step of the printed board unloading process in the Y direction is performed in the state where the printed board 2 that can be carried out is provided. is there. Further, the downstream buffer conveyor 12 according to this embodiment moves to the next position in the Y direction without the printed circuit board 2 being placed thereon.
According to this embodiment, the downstream buffer conveyor 12 follows the movement of the mounting equipment conveyor 8. For this reason, the printed circuit board 2 in the electronic component mounting device is carried out from the mounting device conveyor 8 to the downstream buffer conveyor 12 while the operation process of the electronic component mounting device is sequentially performed. Therefore, the moving distance of the mounting apparatus conveyor 8 in the Y direction is minimized, and the printed board 2 is efficiently conveyed.

The buffer conveyor according to this embodiment includes an upstream buffer conveyor 11 provided between the upstream conveyor 6 and the mounting equipment conveyor 8. The upstream buffer conveyor 11 moves to the carry-out position when the mounting equipment conveyor 8 is waiting at the carry-out position for carrying out the printed circuit board 2 in the Y direction.
According to this embodiment, when the printed circuit board 2 is carried out from the mounting equipment conveyor 8, the next printed circuit board 2 is sent from the upstream buffer conveyor 11 to the mounting equipment conveyor 8.
Therefore, according to this embodiment, since the mounting board conveyor 8 can carry in and carry out the printed board 2 at the same time, the printed board 2 is efficiently transported.

The upstream buffer conveyor 11 according to this embodiment moves to the work position when the mounting equipment conveyor 8 stands by at the work position where the work by the electronic component mounting equipment 4 is performed in the Y direction. Is. For this reason, the next printed circuit board 2 can be sent from the upstream buffer conveyor 11 to the mounted apparatus conveyor 8 when the printed circuit board 2 for which the operation has been completed is carried out on the mounting apparatus conveyor 8.
Therefore, according to this embodiment, since the mounting board conveyor 8 can carry in and carry out the printed board 2 at the same time, the printed board 2 is efficiently transported.

In embodiment mentioned above, the board | substrate conveyance system 1 provided with the upstream buffer conveyor 11 and the downstream buffer conveyor 12 was demonstrated . However, the substrate transfer system 1 can be configured by providing only one of the upstream buffer conveyor 11 and the downstream buffer conveyor 12.

  DESCRIPTION OF SYMBOLS 1 ... Board conveyance system, 2 ... Printed circuit board, 3 ... Upstream apparatus, 4 ... Electronic component mounting apparatus, 5 ... Downstream apparatus, 6 ... Upstream conveyor, 7 ... Downstream conveyor, 8 ... Mounting equipment conveyor, 11 ... Upstream buffer conveyor, 12 ... downstream buffer conveyor.

Claims (4)

A mounting equipment conveyor for transporting a printed circuit board in a horizontal first direction from one end of the electronic component mounting equipment to the other end;
An upstream conveyor that unloads the printed circuit board from an upstream device located upstream of the electronic component mounting device in the transport direction of the printed circuit board;
A downstream conveyor for bringing the printed circuit board into a downstream device located downstream in the transport direction of the printed circuit board from the electronic component mounting device;
A buffer conveyor disposed so as to be positioned between at least the downstream conveyor and the mounting equipment conveyor of the upstream conveyor and the downstream conveyor;
The mounting equipment conveyor has a function of moving the printed circuit board in a second horizontal direction perpendicular to the transport direction,
The upstream conveyor is disposed away from the downstream conveyor in the second direction,
The buffer conveyor has a function of transporting the printed circuit board in the first direction and a function of moving the printed circuit board in the second direction,
The mounting device conveyor and moved to ride a printed circuit board from one of the conveyor of these conveyors to the other conveyor in the state where the buffer conveyor is located at the same position in the second direction,
The mounting equipment conveyor is
In the buffer conveyor, when the downstream buffer conveyor provided between the downstream conveyor and the mounting equipment conveyor is waiting at the unloading position for unloading the printed circuit board in the second direction, and When the printed board that can be carried out and the next printed board on which the next operation is to be performed are in the mounting equipment conveyor, the next position of the next step of the carrying out process in the second direction is the next position. And move to a position where work is performed on the next printed circuit board,
The downstream buffer conveyor moves to the next position in the second direction in a state in which the printed board is not carried and the printed board is not placed thereon. A mounting equipment conveyor for transporting a printed circuit board in a horizontal first direction from one end of the electronic component mounting equipment to the other end;
An upstream conveyor that unloads the printed circuit board from an upstream device located upstream of the electronic component mounting device in the transport direction of the printed circuit board;
A downstream conveyor for bringing the printed circuit board into a downstream device located downstream in the transport direction of the printed circuit board from the electronic component mounting device;
A buffer conveyor disposed so as to be positioned between at least the downstream conveyor and the mounting equipment conveyor of the upstream conveyor and the downstream conveyor;
The mounting equipment conveyor has a function of moving the printed circuit board in a second horizontal direction perpendicular to the transport direction,
The upstream conveyor is disposed away from the downstream conveyor in the second direction,
The buffer conveyor has a function of transporting the printed circuit board in the first direction and a function of moving the printed circuit board in the second direction,
In the state where the mounting equipment conveyor and the buffer conveyor are located at the same position in the second direction, the printed circuit board is transferred from one conveyor of these conveyors to the other conveyor,
The mounting equipment conveyor has a printed circuit board that can be carried out, and a downstream buffer conveyor provided between the downstream conveyor and the mounting equipment conveyor prints in the second direction. A board transfer system for an electronic component mounting device, which moves to the carry-out position in the second direction when waiting at a carry-out position for carrying out a board. The board transport system for electronic component mounting equipment according to claim 1 or 2 , wherein the buffer conveyor includes an upstream buffer conveyor provided between the upstream conveyor and the mounting equipment conveyor,
The electronic component mounting apparatus, wherein the upstream buffer conveyor moves to the unloading position when the mounting apparatus conveyor stands by at the unloading position for unloading the printed circuit board in the second direction. Substrate transfer system. The board transport system for electronic component mounting equipment according to claim 1 or 2 , wherein the buffer conveyor includes an upstream buffer conveyor provided between the upstream conveyor and the mounting equipment conveyor,
The upstream buffer conveyor moves to the work position when the mounting equipment conveyor stands by at a work position where work by the electronic component mounting equipment is performed in the second direction. A board transfer system for electronic component mounting equipment.

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